Fire extinguisher



Oct. 3, 1933. c, R. D'oLlvE FIRE EXTINGUISHER Filed June 28. 1929 MWL.

Patented Oct. l3, 1933 Unfreie-ms Fy'r-Fyter' Company,Day ton,' Ohio,Yap'corpora-Q 'Y 'l .-ebplieiiil Jini?#85.19294iSerieNaaaos 5 claims;(Gilles-2)' v Thisinvention relates .to refextinguishers. Y v,One ofthe'principal objects of the invention is theY provision of a nreextinguisher which-isv economical to manufacture, is .simple inacon-Ystruction and operation, and is `highly .effective in its actionvAnother object ofthe` invention to provide an extinguisher which maybelocated adjacent a potential source of nre and may be operatedfrom aremote position, thereby T'providing a. satisfactory extinguisher for a.vehicle, such as an air-f plane 1. lili l L Other objects and advantagesoffthe. invention will berapparent fromthe following descrip@ tion, thelaccompanying drawing and theappended claims'. 1 ,A In the drawing,inwhich like characters-Pof reference designate likeV parts throughoutthe several views thereofz- Fig. .l ;i s a bottom plan ViewV of 'a' nreextinguisher:constructed in accordance with-this invention; A Y l f AFig. 2'is a verticalsection taken on the'plane of the line 2 2 oflg.`l;Y Y

Fig-f 3j is a partial vertical section .taken'onV the planef'o'f theline 373 of.Fig.'2;` 1. Fig. 4 is a view similar to Fig. 3 showing amodiflcationll f Fig. 5 is a section through an airplaneengine housingshowing the extinguisher of this invention mounted therein; and

Fig. 6 is a diagrammatic showing of a trimotored airplane in which aremounted eX-' portion 14 within which is screwed a lling plug 1 5 havinga sealing gasket 16.

The cylindrical casing is preferably provided with an indented portion17 extendingv longi` tudinally thereof. Within this indented portion isformed a slot or slots 18which serve as 'discharge ports for the releaseof the contents of the container. vent tubes are provided. Each venttube has an outwardly flared end portion 21 whichis soldered orotherwise attachedto the container wall with- The end wall 13 In orderto aid the discharge,l

in the indented portion;V l'Ihe vent tubes entend upwardly and openwithin the Vcor'it'ainer adjacent the wall thereof:` opposite"'theindented portion;

Preferably apluralityoffvent tubes 20"a`re;pro lvided; as .showmin Fig..2,. where one' isuipositioned adjacent each end Vwall so thatifthefex'.-

tinguisher is putV-in'to: operation' while intilted position at leastone of the ventltube'fopenings will be aboveth'e level of the huidwithinthe cn-V tai-ner and willprovide ia path for'air"` to enter thecontainer` and displace 'the' fluid'contentst'o "i aid in the `rapiddischargefof the contents; A? Y sealing rnember22,zwhich may be av thinmetallic strip of shim stock,.:is attached tofthefsurface of thecontainerfwithin the indentedportiofi by 'running soft solder: orflikematerialindicated-'at 23 into the joint'between the edges of'f'th'e'seal ing member andthe surface of the indented portion..'This'vservesto seal-the.v slot and'v'ent tube Y openings .soA as K4tofprovide 1an vairtight j'closure for the container.. One'end of the'Se`alin'g1inern-` i ber is provided with'- a' loopn30 orothe'rattaching means-to` which an operating `cablesuch asfthe pull .cord31 issecured so ythat-uponactuation'*of the'pull cordthe softsolder jointbetween the sealing memberiand the` containerfwalLwill" be broken and.the :sealing member Iwill be' torn laway from the container;` thusexposingr the discharge ports 18 and the vent tubes 20 to Vpermit -discharge of the extinguishing liquid from'the con-` tainer inthe form of acurtain or sheetfspray.

Fig. 4 shows a modified construction lin which edges of the slot arebent inwardly as at 25 to 'provide Va V-shape trough withinwhich' islaid a'wire 26. Solder indicated at 27 is run into thev "the containerwall 11 is' slotted andthe adjacent y space'between .the wire and thebent-in surfaces of. the containerwall to provide a sealed joint overthe slotted ope`ning28.V

In-Fig. 5 an extinguisher V10 constructed in the.' Y manner abovedescribed is shown mounted Within the housing 35 ofthe. enginecompartment of an airplane. The engine 36,1;0 the crank shaft of' whichis attached a propellerr'ly has intake pipes y 38 communicating with amanifold 39 which in turn is connected tothe'carburetor 40.Theextinguisher V10 is held in place by bracketsy 41, one of which isshown, and isy mounted vwith the slotted opening A18 and the sealingstrip on th'ei Y Y bottom side ofthe extinguisher.'v A pull cord 31 isvattached tothe sealing member of the extinguisher and extends tosome-positionv in the airplane convenient tov the occupants, so thatinl' case of a -fire a pull on thevcord 31 will tear the sealingstripjfrom the extinguisher, thus permit-v ting the contentsto bedischarged by gravity and to be carried over the carburetor and itsassociated parts.

In Fig. 6 vextinguishers are shovvn applied to a tri-metered airplane.An extinguisher 1 0 is positioned in each'of the engine compartments andto each extinguisher is attached .la pull cord 3l.`

The pull cords 31 terminatein'control handles 42 which are Within easyreach of the pilot who is stationed Within the cock pit 43. If are'should start in any one yof the engine compartments the pilot, bypulling the respective control cord extending to the particularcompartment in which the fire originated,can .discharge the cony -tentsof that particular extinguisherwithout actuation of the others. Uponremoving the sealing strip the extinguishing i'luid Williallbye gravityand will be sprayed by the vslip streamor air l currents created by thepropeller throughthe engine compartment.

` While Ithe forms of apparatus herein described constitute-:pref erredembodiments' of the inven tion, it is to be Vundrerstoodthat theinvention is notflimited to these preciseformsvof apparatus, and thatchanges may be madetherein without departing from the scope ofjth'einvention which is defined in the appended claims 11 `gWhatisclaimedfis: i r' f, 1.` A re extinguisher comprising a container adaptedto Yhold a vfire extinguishing fluid, a dis Y charge port'for saidcontainer, avent 'for said containenmeans releasably fastened to saidcon-L tainerwover said discharge port and said vent forl `sealing saiddischarge port and said vent, and

. manually operable meansl for removing -said seallng-means from thecontainer so as to 4expose saidrdischarge port and said vent. withresultant discharge of said re extinguishing fluid.

f2. A re extinguisher comprising an elongate container'adapted to hold afire extinguishing for eiecting stripping of said said port and saidvent tube for sealing said portv and said vent tube, and means forremoving said sealingmeans from the container so as Yto expose the saidport and `vent tube with resultant discharge of said fire extinguishingfluid.

3. A re extinguisher comprising a container, adapted to holdfa fireextinguishing fluid, said Vcontainer having an indented portion in theside wall thereof extending longitudinally of the container, saidcontainer having a discharge port in said -indentedportiom a vent tubeopeningv Within the extinguisher and fastened to the interior of theindented portion of said container, sealing means attachedto thecontainer within the indented portion providing a closure forsadrdischarge port andvent tube, and means for manually stripping saidsealing means from said container to expose saiddischarge port and venttube: l

` 4; A fire extinguisher of the character described comprising anelongate'container adapted to.hold a fire extinguishing fluid, saidcontainer Yhavingan elongate slot in the side wallthereof extendingAlongitudinally of said container, a plurality ofvent-tubes extendingfrom saidrslot in the sidewall of the container and opening withinthecontainer adjacent the opposite wall thereof,

` there` being a. venttube adjacent eachend of the extinguisher, asealing.v member providing a closure for. said' slot and vent tubes,means such as soft solder for releasably fastening said sealing membertoV said extinguisher, and means sealing member from saidextinguisher.V-

5. A re .extinguishercomprising a container adapted to hold a firevextinguishing fluid Vand having a gravity discharge portl for thedischarge `oi' said extinguishing fluid from the ex tinguisher, asealing member for the Vdischarge port, a vent for thev container, meanssuch as soft solder for releasably fasteningtthe sealing member to thecontainer over thel discharge'port and vent, and manually operablemeansfor removing said sealing member from the contanerlso. as to exposevsaid port and vent with resultant discharge of said fire extinguishingfluid.

CHARLES R. Donrvrz.l

